When employees undergo evaluation, their scores are independent and uniformly distributed between 60 and 100. A) If six employees take the evaluation, what is the probability that half of them score more than 85 and half less? B) if six employees take the evaluation, what is the probability that two score less than 80, two between 80 and 90, and two above 90? C) If the employees are tested sequentially, what is the expected number of employees who need to be tested before 3 scores are higher than 90?

When employees undergo evaluation, their scores are independent and uniformly distributed between 60 and 100. A) If six employees take the evaluation, what is the probability that half of them score more than 85 and half less? B) if six employees take the evaluation, what is the probability that two score less than 80, two between 80 and 90, and two above 90? C) If the employees are tested sequentially, what is the expected number of employees who need to be tested before 3 scores are higher than 90?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.8: Probabilities Of Disjoint And Overlapping Events

Problem 2C

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